Ments



2 Shets-Sheet l G. H. GILMAN DRILLING MACHINE Original Filed July 21, 1921 g8 li'i/ijginiezzv:

or e .61 mm by n A V mm; mm km my N Q May 26, 1931.

' 25 and Patented May 26, 1931 UNITED STATES PATENT OFFICE GEORGE H. GILMAN, F BELMONT, IVIASSACEUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO WORTIIING'ION PUMP AND IvIAGHINEEY CORPORATION, 0F NEW YORK,

N. Y., A CORPOBATIDN- VIRGINIA DRIL' ENG MACHINE Application filed July 21, 1921, Serial No. 486,378. Renewed July 25, 1930.

My invention relates to drilling machines having feeding mechanism for moving the tool relatively to the work. v

The invention will be best understood-from the following description when read in light of the accompanying drawings of a specific embodiment of my invention. selected for illustrative purposes while the scope of my invention will be more particularly pointed out in the appended claims.

In the drawings Fig. 1 is a plan view of a rock drilling machine and showing how more than one tool may be employed for simultaneous operation;

Fig. 2 is an elevation of the solid line parts of Fig. 1;

Fig. 3 is a fragmentary section on the line 33 of Fig. 1;

Fig. 4 is a section on the line 4'4 of Fig. 2, with parts broken away Fig. 5 is a section on the line 5.5 of Fig. 1 with parts broken away;

Fig. 6 is a section on the line 66 of Fig. 3;

Fig. 7 is a section on the line 7'-7 of Fig.2. Referring to the drawings, I have shown a tool 1 and an actuator 3 for said tool and although these may be of any suitable or usual type, as shown I have indicated the tool as a rock drill bit and its actuator as a fiuidpressure operated hammer drill.

In the submitted embodiment of the invention, the means for feeding the drill bit relatively to the rock comprises a cylinder member 5 and a cooperating piston member 7. As will be understood by those skilled in the art, if one of these members is attached to the actuator and the other is held stationary is admitted to the cylinder.

For supporting the feeding mechanism, the

actuator and drill bit, I provide a longitudithe form of a hollow bar 9. This bar may be supported in any suitable manner, and as shown I have provided the bar at its front end with a point 11 adapted to engage the rock while at a point remote from the front end the bar is shown supported on the horithe actuator will be moved when motive fluid nallv extending support which herein is in- Zontal arm'13 of the vertical mine column 15.

The actuator for the drill bit I have shown secured in side to side relation to the feed cylinder member 5. For this purpose I here in provide the cylinder member at opposite ends with pairs of cars 17 each ear having a perforation in alignment with a perforation in a corresponding ear at the other end of the cylinder. Through these aligned perforations extend one of each of the upper pair of the four side bolts 19 holding the sections of the actuator casing in assembled relation.

The feed piston member shown comprises a piston head 21 detachably secured to a tubular piston rod which extends through and by means of suitably arranged packing fits in fluid tight manner the rear head 23 of the feed cylinder. The bar 9 extends through the feed cylinder and feed piston, packing being provided to cause it to fit the front feed cylinder head 25 in a fluid tight manner and likewise the exterior head 27 of the feed piston.

As illustrated for clamping the feed piston to the bar 9, the exterior head 27 of the piston carries adjacent its rearward end a clamping member 29 provided with a semi-cylindrical surface 31 fitting the upper portion of the bar. This clamping member is provided with the flat side surfaces 32 which fit similar guidesurfaces forming the peripheral walls of a cavity 33,.the cavity receiving the clamping member and being formed in the upper portion of the head 27 of the piston. Below the clamping member this cavity is formed with'a semi-cylindrical surface 34 which fits the lower portion of the bar. At opposite sides of thebar the head is perforated to slidingly receive the bolts 35 formed integrally with the clamping member, thesebolts projecting below the head and each extending through a perforation formed through an end of a yoke 37 to which yoke the bolts are secured in assembled relation by means of the nuts 39 on the ends of the bolts. The yoke is provided with. the boss 41 having a screw threaded opening receiving the screw 43 which at one end bears against the boss 45 formed on the lower portion of the head and at its other end is provided withan operating handle 46. As

will be obvious by manipulation of the operating handle the piston may be releasably clamped to the bar 9.

For admitting motive fluid to the feed cylinder I herein form in the walls of the latter passages 47 and 49 which respectively establish con'ununica'tion between the forward end of the cylinder and the tapered socket 51 and between the rearward end and the tapered socket 53, these sockets being formed adjacent each other in the cylinder wall and located in the medial plane of the actuator. As heretofore stated the actuator in the embodiment of the invention submitted is operated by fluid pressure For this purpose it is provided with a motive fluid intake represented by the air hose connection 55, the latter leading to the valve casing 57 of the actuator throttle valve, the operating handle of the valve being indicated at 59. In the rear head 61 of the actuator I form a valve casing 63 for the frusto-conical turning plug 65, the latter having the operatinghandle 67 and controlling admission and exhaust to the passages 47 and 49'. For conducting motive fluid to the valve casing 63 I provide in the wall of the actuator casing'apassage 69 in permanent communication with the air hose connection and said valve casing. In communication with the valve casing 63 I provide a pair of passages 7 land 73, each of which respectively is in communication with the annular grooves 75 and 77 formed on the exterior surface of the cylindrical plug 79 fitting the rear cylin der head. Diametrically opposite the passages 71 and 73 in the cylinder head are formed the respective passages 81 and 83 establishing communication between the grooves 75 and 77 and the sockets 51 and 53, these passages for this purpose leading through nipples 85 and 87 formed integrally with there'ar cylinder head and respectively fitting the sockets 51 and 53 in a fluid tight manner.

The valve is formed with an exterior arcual groove 89 in permanent communication with the passage 69 for conducting motive fluid to the valve casing and further is provided with an axial passage 91 opening through the end of the valve opposite the operating handle 07, this passage being placed in communication with the exterior of the valve by means of a radial passage 93. The passages 69, 71 and 73 of the cylinder head. and the groove 89 and passage 93 of the valve are all in the same plane and are so proportioned and arranged that in the neutral position of the valve as illustrated by Fig. 3, the groove 89 is out of communication with both'passages 71 and 73 while the latter are placed in communication with each other and with the atmosphere by means of the radial'passage 93 and axial passage 91 of the valve, or in other words, in this position of the valve the ends of the'feed cylinder are placed in communication with each other and the atmosphere. If the valve is moved clockwise, the radial passage 93 is moved out of communication with the passage 71 but is maintained in communication with the passage 73 and likewise the groove 89 is moved into communication with the passage 71. This clockwise movement will supply motive fluid to the frontend of the feed eylinderand connect the rear end to the atmosphere, which will move the cylinder toward the work. counterclockwise movement from the position shown by Fig. 3 will interrupt the communication between the passage 73 and the atmosphere and maintain such communication with the passage 71 and at the same time the groove 89 will be brought into communication with the passage 73 to supply motive fluidto said passage. This countercloclnvise movement will act to admit motive fluid to the rear end of the cylinder and connect the front end to the atmosphere, which will cause the feed cylinder to move away from the rock.

I have shown the bar 9 attached to the arm 13 of the mine column in such manner that the bar may be swiveled relatively to said arm and may be releasably secured thereto at different places lengthwise of the bar so that the point of the bar may be adjusted to the surface of the rock. For this purpose 1' provide the frusto-conical trunnion 95 which carries at one side thereof a sleeve 97 slidably fitting the bar and at its other side aclamp for securing the bar to the trunnion. The clamp comprises a stationary jaw 99 provided with a semi-cylindrical surface fitting the lower portion of the bar and a movable jaw 101 having a semi-cylindrical surface fitting the upper portion of the bar. At adjacent ends, the jaw 101 is hinged to the'jaw 99by a pin 103 and at the ends of the jaws opposite the pin the jaw 99 is provided with a screw-threaded perforation receiving the screw 105, the latter loosely extending through an aligned perforation at the end of the jaw 101 and having an operating handle 107 providing a shoulder 109 in engagement with the upper surface of the j aw 101. When the screw is turned in one direction it acts to draw the jaws together and secure the bar to the trunnion and when turned in the other direction to release the jaws from the bar to permit the latter to be slid through the sleeve 97.

As shown, for supporting the trunnion to the arm 13 of the mine column I provide a common type of trunnion support which as shown comprises an upper half-sleeve portion 111 and a lower half-sleeve portion 113 adapted to be clamped to the bar by means of bolts 115. The upper half-sleeve portion is provided with a recess providing surfaces which fit the edges and sides of the trunnion for a part of the circumference of the latter.

On the side of the half-sleeve portion 111 opposite the recess just described is pivoted member 117 affording a clamping surface fitting the surface of the trunnion and adapted to be drawn against the trunnion by means of a bolt 119 carried by the half-sleeve portion 111. It will be noted that by loosening the bolts 11.5 and 119 the bar 9 may be placed in any angular position relatively to the bar 13 and by this means a universal joint is pro vided for supporting the bar 9.

For supporting the drill steel on the bar 9 I hereinprovide a device includingthe members 121 and 123 pivoted together at one end by means of a pin 125.- At an intermediate portion the members 121 and 123 are each provided with raised portions providing jaws 127 adapted to engage the bar 9. Through the member 123 and at the, side of the bar opposite the pin 125 I provide a screw-threaded hole 129 which receives the end of the screw 131; Opposite the perforation 129 the member 121 is provided with a perforation 133 through which the other end of the bolt loosely extends and at this end the bolt is provided withan operating handle 1353 providing a shoulder 137 resting against the outside surface of the member 121,. As will be obvious, by turning the screw, the portions 127 may be drawn against the bar 9 to clamp the parts rigidly thereto. At

their lower ends the members are provided with substantially semi-cylindrical recesses 138 which when the members 27 are drawn together provide a bearing for supporting the drill steel. 7

In practice, with the parts in the position shown by Fig. 3, and the 1 feed cylinder clamped to the bar, motive fluid may be admitted to the actuator by manipulation of its throttle valve handle 59 to cause the actuator to operate, and simultaneously the feed cylinder may be moved manually to spot the hole. After the hole is spotted the valve may be moved in a clockwise direction to admit motive fluid to thefront end ofthe feed cylinder and exhaust it from the rear end, and this will automatically feed the drill steel while the actuator is causing it to drill, Vlhen the feed cylinder has been moved by the feeding.

again clamped to the bar and the feed cylin-' der again fed forward. This operation may be repeated untii a hole of desired depth is drilled. The drill bitmay be retracted by admitting motive fluid to the rear end of the feed cylinder, which as heretofore explained may be done by turning the valve 61 in a Counter-clockwise direction from its position illustrated by Fig. 3. If desired, the actuator may be retracted far enough from the reel: to draw the shank of the drill steel out of the chuck of the actuator, after which the actuator may be swung out of line with the drill steel around the bar 9 or the piston 7 as a pivot tomove the actuator out of line with the drill steel which may then be pulled out of the hole manually.

Referring particularly to Figs. 1 and 2, it will be noticed that the bar 9 extends in the direction of the drill hole and that the trunnion and trunnion support form a universal joint connecting the bar 9 with the arm 13 which enables the machine to be set up to drill holes in any desired direction.

911 the mine column I may mount any desired number of arms 13 and on each arm any desired number of bars 9 in order that any desired number of holes may be drilled simultaneously in the heading and each in the desired direction.

Although I have described for purposes of illustration one specific embodiment of my invention, it will be understood that within the scope of my invention wide deviations may be made from this embodiment without departing from the spirit of my invention.

Claims:

1. In a drilling machine, a longitudinally arranged supporting member, a drill actuator, feeding means for said actuator separate from said member but sup-ported thereby and movable along said member, means for securing said feeding means to said member in different positions of adjustment relative thereto, said actuator supported in lateral offset relation to said feeding means.

2. In a drilling machine, a longitudinally arranged supporting member adapted to be supported at spaced points lengthwise thereof, a drill actuator, feedingmeans for said actuator supported on said member intermediate its length, said means including a cylinder and piston movable along said member into different positions of adjustment relative thereto, and said actuator being supported in lateral offset relation to said cylinder.

3. In a drilling machine, a longitudinally extending support, a feed cylinder member and a cooperating feed piston member, both members being movable along said support and supported thereby, a drill actuator secured in lateral offset relation to one of said feed members for movement therewith, and means for securing the other of said feed members to said support to prevent relative movement therebetween.

4i. In a drilling machine, a longitudinally extending supporting bar, a drill actuator, a feed cylinder member and a cooperating feed piston member ,both members movable along said support and supported thereby, one of said members being secured to said actuator in lateral offset relation thereto, means for securing the other feed member to said bar to prevent relative movement therebctween, and means proriding that when motive fluid is admitted to said cylinder member the actuator will be moved along said bar.

5. In a drilling machine, a feed cylinder member and cooperating feed piston member, a bar extending through said cylinder and piston members, an actuator secured in lateral offset relation to one of said members for movement therewith, and means for securing the other member to said bar to prevent relative incr ment therebetween.

6. In a (milling machine, a feed cylinder member and cooperating feed piston member, a bar extending through said cylinder and piston members, an actuator secured to said cylinder member at the side thereof for move ment therewith, and means for securing said piston member to said bar to prevent relative movement therebetween.

7. In a drilling machine, a supporting bar, a drill actuator arranged. parallel to said bar, a feed cylinder surrounding said bar and carrying said actuator, a feed piston surrounding said bar and fitting said cylinder, and means for clamping said feed piston to said bar.

8. In a drilling machine, a supporting bar, a drill acti itor arranged parallel to said bar, a feed cylinder surrounding said bar and carrying said actuator, a feed piston surrounding said bar and fitting said cylinder, and means carried by said feed piston for clamping the latter to said bar.

9. A drilling machine having, in combination, a feed cylinder, a relatively rotatable and slidable feed piston in said cylinder, said piston having a portion projecting through one end of said cylinder, a bar extending through said cylinder and piston, means carried by the projecting portion of said piston for releasably securing it to said bar, and a drill actuator carried by said cylinder in parallel relation thereto.

10. A drilling machine having, in combination, a feed cylinder, a relatively rotatable and slidable feed piston in said cylinder, said piston having a portion projecting through one end of said cylinder, a bar extending through said cylinder and piston and slidably and rotatablv supporting the same, means carried by the projecting portion of said piston for releasably securing it to said bar, and a drill actuator carried by said cylinder in parallel relation thereto.

11. A drilling machine having, in combination, a feed cylinder, a relatively rotatable and slidable feed piston in said cylinder, said piston having a portion projecting through one end of said cylinder, a bar extending through said cylinder and piston, said bar slidably supporting said piston and slidably and rotatably supporting thatcnd of said cylinder which is opposite the end through which said piston projects, means carried by the projecting portion of said piston for releasably securing it to said bar, and a drill actuator carried by said cylinder in parallel relation thereto.

12. In a drilling machine, a continuous bar adapted to be supported in the direction of the drill hole, a drill actuator in lateral ofset relation to said bar, feeding means for said actuator carried by said bar and comprising a feed cylinder member and a feed piston member, a sliding connection between each of said members and bar, one of said members being secured to said actuator for movement therewith, means for detachably securing the other feed member to said bar for preventing relative movement therebetween, and means for admitting motive fluid to said feed cylinder member for causing relative movement between said members.

13. In a drilling machine, a continuous bar adapted to be supported at spaced points lengthwise thereof, a drill actuator in lateral ofiset relation to said bar, feeding means for said actuator intermediate the length of said bar comprising a feed cylinder member and a feed piston member slidably and rotatably supported by said bar, one of said members being secured to said actuator for movement therewith, means for rendering the other feed member stationary relatively to said bar, and means for admitting InOijlVQ fluid to said feed cylinder member for causing relative movement between said members.

14. In a drilling machine, a continuous bar adapted to be supported at spaced points lengthwise thereof, a drill actuator in lateral offset relation to said bar, feeding means for said actuator intermediate the length of said bar comprising a feed cylinder member and a feed piston member both of which surround said bar and are slidably supported thereon, one of said members secured to said actuator, means for rendering the other member stationary relatively to said bar, and means for admitting motive fluid to said feed cylinder member for causing relative movement between said members.

15. In a drilling machine, a continuous bar adapted to be supported at spaced points lengthwise thereof, a feed cylinder and a feed piston both surrounding said bar and slidably supported thereon intermediate its length, a drill actuator carried by said cylinder in side by side relation thereto, means for rendering said feed piston stationary relatively to said bar, and means for admitting motive fluid to said feed cylinder for sliding the latter along said bar.

16. In a drilling machine, a continuous bar adapted to be supported in the direction of the drill hole, a feed cylinder and a feed piston both surrounding said bar and slidably and rotatably supported thereon, a drill actuator secured in parallel. relation to said cylinder, releasable means for securing said feed piston to said bar, and means for admitting motive fluid to said feed cylinder for sliding the latter along said bar. 7

17. In a drilling machine, a support and feeding means for a drill actuator comprising a feed cylinder member and piston member, a bar extending through said cylinder and piston beyond the ends thereof, and means for attaching said actuator to said feed cylinder in lateral offset relation thereto.

18. In a drilling machine, a support and feeding means for a drill actuator comprising a feed cylinder member and piston member, a bar extending through said cylinder and piston beyond the ends thereof, releasable means for securing one of said members to said bar, and means for attaching said actuator to the other of said members in lateral offset relation thereto.

19. In a drilling machine, a support and feeding means for a drill actuator comprising a feed cylinder member and piston member, a bar extending through said cylinder and piston beyond the ends thereof, said cylinder carrying said actuator in lateral oflset relation thereto and being rotatable relative to said piston and bar, and means carried by said piston member for clamping it to said In testimony whereof, I have signed my name to this specification.

GEORGE H. GILMAN. 

